sub-cooling or under-cooling
super-cooling
normal cooling
none of these
✅ The correct answer is option A.
Mechanical Engineering MCQs
The operation of machining several surfaces of a workpiece simultaneously is called
profile milling
gang milling
saw milling
helical milling
✅ The correct answer is option B.
In a refrigeration system, the expansion device is connected between the
compressor and condenser
condenser and receiver
receiver and evaporator
evaporator and compres
✅ The correct answer is option C.
The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
Boyle’s law
Charle’s law
Gay-Lussac law
Joule’s law
✅ The correct answer is option D.
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
dry bulb temperature
wet bulb temperature
dew point temperature
specific humidity
✅ The correct answer is option C.
The discharged lead-acid battery has on its plates
lead peroxide (PbO2)
spongy lead (Pb)
lead sulphate (PbSO4)
sulphuric acid (H2SO4)
✅ The correct answer is option C.
A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if
length of both the pipes is same
diameter of both the pipes is same
loss of head and discharge of both the pipes is same
loss of head and veloc
✅ The correct answer is option C.
The addendum is the radial distance of tooth from the pitch circle to the top of the tooth.
Agree
Disagree
✅ The correct answer is option A.
Toe-in ensures parallel rolling of the wheel thus stabilizing steering in addition to preventing both sides slipping and excessive tyre wear.
Correct
Incorrect
✅ The correct answer is option A.
In Meyer’s expansion valve, the main valve is driven by an eccentric having an angle of advance from
10° – 15°
15° – 25°
25° – 30°
30° – 40°
✅ The correct answer is option C.